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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7 mm SHERMAN SHORTMAG vs 7 SAUM
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<blockquote data-quote="highdrum" data-source="post: 1881281" data-attributes="member: 13732"><p>Guys, my labradar was on the fritz today. Missed most my rl26/151 solids and N570/180vld pressure tests. I do have solid numbers on the RL23/151 solids. 63gr rl23 w/ 151 did 3081, top charge of 68 did 3331, top 2 charges were compressed I did 1 grain steps. </p><p>71gr N570 w/ 180vld went 3145 with clear ejector. 65gr went 2966</p><p>I didn't get a single **** round of the RL26/151 test. Honestly the best shooting of all was the 151/RL23 where 3 rounds in the middle charges went into one big hole. I've found these solids to be quite finicky on seating depth in the 122gr 6.5 variant. 40k off shot best today @ 3/4" going 3365 average. I'm going to bump powder by 0.2 and see if I can get it closer to thr 3380-3390 node I saw in the psi test and play around with seating depth on the 40k off area. All the 151s were loaded what I believe is 20k off in the max, but who knows, they don't have a normal nose to measure ogive, thr drive band is under gauge to bore and that's what you use for determining jump. All I have as of today, hope to get more info early next week.</p></blockquote><p></p>
[QUOTE="highdrum, post: 1881281, member: 13732"] Guys, my labradar was on the fritz today. Missed most my rl26/151 solids and N570/180vld pressure tests. I do have solid numbers on the RL23/151 solids. 63gr rl23 w/ 151 did 3081, top charge of 68 did 3331, top 2 charges were compressed I did 1 grain steps. 71gr N570 w/ 180vld went 3145 with clear ejector. 65gr went 2966 I didn't get a single **** round of the RL26/151 test. Honestly the best shooting of all was the 151/RL23 where 3 rounds in the middle charges went into one big hole. I've found these solids to be quite finicky on seating depth in the 122gr 6.5 variant. 40k off shot best today @ 3/4" going 3365 average. I'm going to bump powder by 0.2 and see if I can get it closer to thr 3380-3390 node I saw in the psi test and play around with seating depth on the 40k off area. All the 151s were loaded what I believe is 20k off in the max, but who knows, they don't have a normal nose to measure ogive, thr drive band is under gauge to bore and that's what you use for determining jump. All I have as of today, hope to get more info early next week. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7 mm SHERMAN SHORTMAG vs 7 SAUM
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